Fertilizers, Chemicals
March 11, 2026
Platts clarifies methodology for Sulfuric Acid CFR Mejillones CP assessment
Platts, part of S&P Global Energy, would like to clarify the methodology for its Sulfuric Acid CFR Mejillones (Chile) CP $/metric ton Yr (FSAMA04) price assessment.
Platts clarifies that this annual contract price is published as a low and a high value and does not include a 'close' value.
A new price range is only published from the first week of January in the year of the contract, when it replaces the price range from the preceding year.
The specifications of this assessment are as follows:
| Specifications | |
| Assessment name | Sulfuric Acid CFR Mejillones (Chile) CP $/mt Yr (FSAMA04) |
| Quality | Sulfur burner acid, smelter acid |
| Quantity | 10,000-20,000 mt |
| Basis and Location | CFR Mejillones, Chile (Contract price) |
| Timing | Includes all contract deals concluded during the year |
| Frequency | Annual |
| Unit of assessment | $/mt |
| Timestamp | 1630 São Paulo, published according to the São Paulo publishing calendar |
This assessment is currently published in the Fertecon Sulfuric Acid Market Report and is available on Energy Core.
Please send any feedback, questions and comments on this proposal to fertilizer@spglobal.com and pricegroup@spglobal.com.
For written comments, please provide a clear indication if comments are not intended for publication by Platts for public viewing. Platts will consider all comments received and will make comments not marked as confidential available upon request.